Document encrypting system and method using same

Abstract

A document encrypting system in an electronic apparatus includes a communicating module, an encoding module, a decoding module, and a deleting module. The communicating module builds a communication with the network storage device, downloads the encryption algorithm from the network storage device, and stores the encryption algorithm in the local storage device. The encoding module employs the encryption algorithm to encode the document. The decoding module employs the encryption algorithm to decode the document. The deleting module deletes the encryption algorithm stored in the local storage device.

What is claimed is: 
     
         1 . An electronic apparatus communicating and exchanging data with a network storage device, the network storage device storing an encryption algorithm, the electronic apparatus comprising:
 a local storage device that stores at least one document; and   a document encrypting system, comprising:   a communicating module that downloads the encryption algorithm from the network storage device, and stores the encryption algorithm in the local storage device;   an encoding module that employs the encryption algorithm to encode the at least one document;   a decoding module that employs the encryption algorithm to decode the at least one document; and   a deleting module that deletes the encryption algorithm stored in the local storage device.   
     
     
         2 . The electronic apparatus of  claim 1 , wherein the encryption algorithm is a partition encoding algorithm, the encryption algorithm divides the encrypted document into a plurality of unreadable sub-documents, and the unreadable sub-documents are stored in the local storage device. 
     
     
         3 . The electronic apparatus of  claim 2 , wherein the encryption algorithm randomly cuts a part of data from the at least one document to form an additional text. 
     
     
         4 . The electronic apparatus of  claim 3 , wherein the communicating module uploads the additional text to the network storage device after the at least one document has been encrypted. 
     
     
         5 . The electronic apparatus of  claim 3 , wherein the encryption algorithm decodes the unreadable sub-documents and forms a complete document by combining the decoded sub-documents with the additional text. 
     
     
         6 . The electronic apparatus of  claim 1 , wherein the electronic apparatus communicates with the network storage device via a wireless network. 
     
     
         7 . The electronic apparatus of  claim 1 , wherein the electronic apparatus communicates with the network storage device via a wired network. 
     
     
         8 . The electronic apparatus of  claim 1 , wherein the network storage is selected from the group consisting of an e-mail serve and a cloud drive. 
     
     
         9 . A document encrypting method being performed by execution of computer readable program code by a processer of an electronic apparatus, the electronic apparatus communicating and exchanging data with a network storage device, the network storage device storing an encryption algorithm, the electronic apparatus comprising a local storage device storing a document, the method comprising:
 communicating with the network storage device when the document is encrypted;   downloading the encryption algorithm and storing the encryption algorithm in the local storage device;   encoding the document via the encryption algorithm; and   deleting the encryption algorithm stored in the local storage device after finishing encoding the document.   
     
     
         10 . The method as claimed in  claim 9 , further comprising:
 communicating with the network storage device when the encrypted document is decoded;   downloading the encryption algorithm and storing the encryption algorithm in the local storage device;   decoding the document via the encryption algorithm; and   deleting the encryption algorithm stored in the local storage device after finishing decoding the document.   
     
     
         11 . The method as claimed in  claim 9 , the network storage device is accessed by verifying a user identification and a corresponding user password, the document encrypting method further comprising:
 displaying a pop-up window to ask the user to input the user identification and the user password before communicating with the network storage device.   
     
     
         12 . The method as claimed in  claim 9 , wherein the encryption algorithm is a partition encoding algorithm, and the step of decoding the document via the encryption algorithm comprises: dividing the encrypted document into a plurality of unreadable sub-documents, and storing the unreadable sub-documents in the local storage device. 
     
     
         13 . The method as claimed in  claim 12 , wherein the step of decoding the document via the encryption algorithm further comprises a step of randomly cutting a part of data from the document to form an additional text and storing the additional text in the local storage device. 
     
     
         14 . The method as claimed in  claim 13 , further comprising:
 uploading the additional text to the network storage.   
     
     
         15 . The method as claimed in  claim 14 , further comprising:
 deleting the additional text stored in the local storage device.